func_door #

Direct use only - require a non-occluded view of entity in order to use it.
Ignore Targetname allows to open named doors by touching (same as the flag above, but in the parameter form).
Custom Move and Stop sounds.
Custom Locked and Unlocked sounds and sentences.
Sound radius - configure door sounds attenuation.
Fire On Open - fire when door has opened. This parameter is added for compatibility with Spirit of Half-Life. You can use Fire On Open End instead.
Fire On Start, Fire On Stop and corresponding parameters to denote trigger states. Fire when door starts or stops moving (either direction).
Fire On Open Start, Fire On Close Start, Fire On Open End and Fire On Close End and corresponding parameters to denote trigger states.
Obey Trigger Mode - make doors interpret the use-type when triggered (On is to open, Off is to close). By default in Half-Life doors ignore the input use-type.
Collision with corpses - allows to ignore collision with dead monsters. Corpses won’t block this door and won’t get crushed.
Continue moving if blocker is crushed. By default this behavior is controlled globally by the doors_blocked_recheck feature. This option allows to configure the behavior specifically for the door instance.
If locked, play locked sound on use - allows to enable playing the locked sounds for usable doors when the door is locked by a master. In Half-Life usable doors don’t play the locked sounds.

Depends on the Obey Trigger Mode parameter.

doors_blocked_recheck. Server feature. Re-check if blocking entity is destroyed by door’s damage and the door can continue moving. In Half-Life the door returns to its previous position when blocked by something even if the obstacle is destroyed by the damage inflicted by door.
doors_blocked_fade_corpses. Server feature. Whether killed monsters are getting non-solid and fade if they block the door movement. Set it to true if you want to ensure that corpses won’t block the doors.